Re: [Qemu-devel] [RFC PATCH 14/14] COLO: implement a new block driver

[Max Reitz]

On 2015-02-11 at 22:07, Wen Congyang wrote:
> Signed-off-by: Wen Congyang <address@hidden>
> Signed-off-by: zhanghailiang <address@hidden>
> Signed-off-by: Gonglei <address@hidden>
> ---
>   block/Makefile.objs |   2 +-
>   block/blkcolo.c     | 409 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>   2 files changed, 410 insertions(+), 1 deletion(-)
>   create mode 100644 block/blkcolo.c

Seeing what you want to use the BlockBackend for (which is, set up an 
NBD server): I think it's best to create the BlockBackend the moment the 
NBD server is created, and destroy it the moment the NBD server is 
stopped (that is, create it in colo_svm_init() and destroy it in 
colo_svm_fini()).

Max